John s



PUMP.

Patented Mar. 6, 18.94.

J ef

E: E e i I /ee J. s. LoseH.

(N0 Model.)

Ntra' Sterns A'rnrrr rrrcn.

JOHN S. LOSCH, OF SUMMIT STATION, PENNSYLVANIA.

PUIVIP.v

`SIIIjalCIlICATION forming part of Letters Patent No. 516,162, dated March 6, 1894. Application filed March 1l, 1893. Serial No.4651493. (No model.)

To all whom t may concern.-

Be it known that I, JOHN S. LOSOH, a citizen of the United States of America, residing at Summit Station, in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in double-acting pumps,

The invention will iirst be described in connection with the accompanying drawings, and then pointed out in the claim.

Figure 1 of the drawings is a front elevation of my pump, the crank being partly broken away to show the means for varying the stroke ot the piston. Fig. 2 is a vertical sectional view of the pump.

Referring to the drawings, A is the bodyseotion of the pump, all of its parts being cast integral. It comprises a cylinder a, two water passages b and c, a top plate d having three openings l, 2, and 3, and a bottom plate e, open beneath the cylinder and the waterpass'ages. In the lower edge of the cylinder is an opening 4, in communication with passage b; and in the upper edge of the cylinder, on the opposite side, is a like opening 5, communicating with passage c. Openingl in the top plate is over passage b, opening 2 is in the top of the cylinder, and opening 3 is over passage c and a portion of the cylinder. By cutting out the bottom plate beneath passage b and forming opening 3 in the top plate, I avoid the necessity, in forming the throats of adequate size, of making openings 4 and 5 in the cylinder of such large size as to cause an undue limitation of the stroke of the piston.

B is the lower or inlet section of the pump, comprising an inlet-pipe f, a lateral branch g, and an attaching-plate, h, in which there are two'openings 6 and 7.

C is a gasket interposed between the lower section B and the body section A; and to this gasket are flexibly attached two clapvalves t' and j, the former covering the opening 6 and the latter covering the opening 7 in the inlet-section, as shown.

D is the upper or outlet section of the pump, comprising an attaching-base 7c, a dome Z, a

stuffing-box 'm for the piston-rod, andan outlet-pipe n, the latter screw-threaded at its upperend.

lnterposed between sections A and D is a gasket E, to which are tiexibly attached two n clap-valves o and p, the former covering opening l and the latter covering opening 2 in the top plate of the cylinder.

F is a T connection screwed onto the upper end of pipe n, and having a discharge-opening at 8.

G is a piston, adapted to work in the cylinder a.; and H is the piston-rod,which passes through the stufling-box m, and connects at its upper end witha coupling I, which carries a crank-pin 9, on which is journaled the lower end of a link J. The upper end of this link is journaled on a pin l0, adj ustably secured in a crank K, fixed on a power-shaft L, mounted in bearings ll carried on a standard M secured at its lower end in the T connection F. The crank K is slotted, as at 12, and in this slot the pin 10 is secured in any desired position. A

The operation of my pump is as follows: Assume the piston to be down, when the various valves will be in the positions shown in full and dotted lines-that is to say, valves@ and p will be closed and o and j en. Then when power is applied to shaft L the piston will be raised to the position shown in dotted lines in Fig. 2, and as it rises the valvez'will open, admitting water to the cylinder beneath the piston, it being understood that on the downstroke of the piston water has entered the cylinder above the piston through the inlet-branch g, valve-opening 7, and waterpassages c, flowing from the latter into the cylinder through the opening 5. It will be apparent that in rising the piston will cause valve o to close by suction in passage b, and at the same time force the water in the cylinder out through valve-opening 2, valve j being meanwhile closed by the back pressure on it. From what has already been said it will be clearly understood that as the piston is forced down valvet will be closed, and the water beneath the piston will be forced up through passage b and out through valveopening l, the suction in the cylinder above the piston closing valve p and opening valve j.

The stroke of the piston may be varied hv simply changing the location of the crank-pin l0 in the slot in crank K, as is obvious.

Having thus described my invention, what 5 I claim as new, and desire to secure by Letters Patent, is-

In a double-acting pump', the combination, with an integral body-section comprising a cylinder having an opening in its lower edge and a like opening in its upper edge on the opposite side,and water-passages at the sides of the cylinder communicating With said openings, a top plate having outlet-openings over one of said water-passages and at the top of the cylinder and a throat-opening over the other passage and a portion of the cylinder, and a bottom plate open beneath the cyl- JOHN S. LOSCI-I.

Witnesses:

H. K. WESTON, JOHN H. PHILLIPS. 

